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Hydrogen Generation

Hydrogen Generation

KnitMesh Technologies manufactures bespoke knitted mesh for use in hydrogen production processes such as water electrolysis, fuell cells, chlor-alkali and power-to-gas.

The knitted mesh is commonly used in Polymer Electrolyte or Proton-Exchange Membranes (PEM), Ion Exchange Membranes (IEM) and Alkaline Zero-Gap Electrolysers.

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Knitted mesh is typically used within electrolysis cell stacks and modular cell cartridges to maximise electrical and pressure contact between cells, divider stacker plates, membranes and diaphragms.

This world-leading material is manufactured from a web of interlocking loops (typically using 0.05 to 0.35mm diameter wire) and is ideal for a variety of applications in the hydrogen production process.

KnitMesh Technologies manufacture solutions in an infinite range of widths and a variety of materials, including transition metals such as nickel and titanium.


Mesh-Jointing Technology

In response to the hydrogen industry’s drive for enhanced efficiencies, KnitMesh Technologies has developed an innovative Mesh-Jointing Technology that welds knitted mesh to every contact point of metal plates and adjacent components such as bipolar plates, porous structures, additional knitted mesh, metallic felt and expanded metal.

These advanced welding processes create a uniform joint that removes electrical contact resistance (ECR).

Flat Mesh

Flat mesh is a high-strength yet flexible material comprising a series of interlocking wire or filament loops.

  • Loop size: 2mm to 20mm
  • Filaments: single or multiple filaments (0.05mm to 0.70mm)
  • Electrical properties: optional welded structures available
  • Various materials: including wire, yarn and filament
  • Composite structure: optional combined materials
  • High density: optional layering and compressibility

Crimped Mesh

Flat mesh can be processed further into a compressible waveform profile. Customers can select compression characteristics to suit application-specific requirements.

Crimped mesh is available in the same variations as flat mesh, to include additional parameters such as:

  • Crimp height: 0mm to 12mm
  • Crimp direction: optional reversed crimp to prevent “nesting”
  • Welding: at the “trough” of the crimp

Compressed Mesh

KnitMesh Technologies can compress flat and crimped mesh into a porous structure of virtually any shape.

Compressed mesh is available in the same variations as flat and crimped mesh, including these additional parameters:

  • Porosity: controlled from 50% to 99%
  • Welding: provides rigidity and reduces electrical resistance
  • Surface area: 20,000 m2/m3 and 5m2/kg

Knitted Mesh in Hydrogen Generation

  • Specified for the hydrogen production process (electrolysis)
  • Can be used as current carriers, spacers or electrodes
  • Integrates high elasticity, resilience and strength
  • Reduced cell voltage and energy use
  • Can be welded to adjacent components with KnitMesh’s Mesh-Jointing Technology
  • Superior gap control in cell stacking from <1mm to virtually any width required
  • Applies an even force to electrodes and membranes
  • Open structure allows for easy collection of hydrogen gas
  • Cut-ends can be enclosed to protect membranes
Suitable Materials For Hydrogen Generation